Support for rock-drilling machines.



No. 878,153. PATENTED FEB. 4, 1908. G. F. PAUL, JR. SUPPORT FOR ROCK DRILLING MACHINES.

APPLICATION FILED APR.18,190'7.

WITNESSES:

ATTORNEY unrrnn STATES PATENT orrron CHRISTIAN F. PAUL, JR, OF PEEKSKILL, NEW YORK, ASSIGNOR TO THE PAUL & KREUGER ROCK DRILL COMPANY, A CORPORATION OF NEW YORK.

SUPPORT FOR ROCK-DRILLING MACHINES.

Specification of Letters Patent.

Patented Feb. 4, 1908.

Application filed April 16.1907. Serial No. 368.541.

T 0 aZZ whom it may concern:

Be it known that I, CHRISTIAN F. PAUL, Jr., a citizen of the United States, and resident of Peekskill, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Supports for Rock-Drilling Machines, of which the following is a specification.

This invention relates to supports for rock drilling machines, and its object is to provide a tripod support for such drills as will enable the drill to be used in almost every position, and it has a particular adaptability to hand-rock-drills, such as form the subject matter of an application for patent by myself, filed June 21, 1906, No. 322,669.

The object is attained by means set forth in these specifications and the accompanying drawings, in which like letters refer to similar parts throughout the several views.

Figure 1 is a rear elevation of the tripod connections with the frame that carries the drilling machine. Fig. 2 is a plan of the frame to which the tripod is attached. Fig. 3 is a plan of the plate or disk upon which the frame shown in Fig. 2 is swiveled. Fig. 4 is a cross-sectional view through line A, Fig. 3. Fig. 5 is an end view of the plate shown in Fig. 3. Fig. 6 is a transverse section through line B, Fig. 1. Fig. 7 is a side view of the central hinge piece p. Fig. 8 is a side view of the swinging head of the outer legs.

As this rock-drilling machine support is complete in itself, adaptable to different constructions of machines, no drilling ma' chine is illustrated. As shown in Figs. 1 and 6 grooved rails c c are adapted to receive a machine, the screw 1' governing the position of the machine on the rails, guides on the machine entering the grooves in the rails. The screw is manipulated by means of the handle j. The rails are united at the top by a cross-bar c. No cross-bar is needed at the bottom end of the rails.

A frame a secured to about the middle part of the rails c 0, comprises two plates 1) Z), divided through their center, having overlapping extensions at their ends, as at a b and b a, affording means for bolts 3 and 6 for binding the two plates together. They are shown partly in cross-section in Fig. 2. The bolt 6 passes through the extension 5 and screws into the extension 0. of the plate Z). The bolt 3 passes freely through the extripod legs.

tension 6' of the plate I), as shown at 5, and screws into the extension a of the plate I). The bolt 3 is provided with a cheek-nut 4, by means of which adjustments are more readily made than by having to move an extended thread on the bolt.

A recess d is made centrally of this frame, and its outer edge is undercut at an angle preferably of 45, as shown in Figs. 2 and 6. The plates 1) b are made to stand normally a little apart as at 90, Fig. 2, so that tightening the bolt 3 or the cheek-nut 4 will draw the plates together.

A disk (Z, Figs. 1. 3 4 5 6, to which the tripod legs are attached, is secured within the recess d in the frame a, and the edge (Z of the disk is shaped to lie in the recess cZ, as shown in cross-section in Fig. 6. When the plates are upon the disk as in Fig. 1, the plates, with the rails c c fastened thereto, constitute the frame for the drilling machine, and this frame may be freely rotated on the disk, when the side bolts are loose. When the bolts are tightened the frame will be held as if in one piece by reason of the large bearing surfaces between the plates and the disk being brought in close and tight contact for the plates 1) b not only clamp the edge of the disk (1, but the effect of the beveled edge of the plate, is to bring the broad base of the disk hard against the surface of the bottom of the recess. The disk (1 is provided with lugs e e, Figs. 1, 3, 4, 5, 6, and in them is held a shaft Z, Figs. 4, 6, for the attachment of the The lugs are extended into bolt clamping surfaces 6 e. They are slotted through to the shaft bearing, as particularly shown at 9, Fig. 5. The open ends of the lugs may be drawn together by bolts n n. Bolt holes 12/ are shown in the lugs in Figs. 4 and 6.

Between the lugs e e, upon the shaft Z-the shaft as shown in Figs. 4 and 6is placed the central leg-head p, 2, as in Fig. 1. A side view of the leg-head is shown in Fig. 7. The head 10 has a leg 2 fast in it, and a slot 3 is cut through the body of the leg to the bore Z. A bolt it through a thickened part to of the head, passes across the slot, so that tightening the bolt tightens the head on the shaft.

On the outer ends of the shaft Zare swivel connections p for the legs 1. Sleeves 0 0, Figs. 1 and 8 are bored to fit the shaft Z, and they are provided with circular bearing surfaces 1". These surfaces are united to the sleeves by extensions u c, which are divided in two by slots 1/. Heads 7) for the legs 1, have rounded terminals 8 in a plane parallel with legs, and matching the like surfaces on the sleeves. The two surfaces are held together by a bolt t, that taps into the part 12, so that tightening the bolt binds the leg to the sleeve and the sleeve to the shaft. The legs are swingable sidewise and towards and from the machine. The bolts n and collars m, Figs. 1 and 4, outside of the sleeves 0 are to keep the sleeves 0 on the shaft.

Having described my invention, what I claim and desire to secure by'Letters Patent, 1s

1. In a support for a hand rock-drilling machine the combination with guide rails for the machine, of a frame for securing them to a tripod comprising two plates divided centrally and having overlapping extensions at their ends to receive clamping bolts, each plate having a coincident semi-circular, angularly undercut recess to receive a disk provided with tripod legs, and bolts through the overlapping extensions for binding the plates together.

2. In a support for a rock drilling machine a combination with guide rails for the drilling machine, of a frame secured to the guide rails comprising two plates divided centrally and having overlapping ends to receive clamping bolts, a circular, angularly undercut recess to receive a tripod disk, a disk fitting the recess with tripod legs attached thereto, and bolts in the overlapping ends of the plates for binding the plates against the disk.

3. In a support for a rock-drilling machine, the combination with guide rails for the drilling machine of a frame comprising 4 circularly recessed plates secured to the rails and adapted to clamp a tripod disk in the re cess, a tripod disk fitted to the recess, the disk having clamping lugs, a shaft through said lugs, a head for a tripod leg on the shaft between the said lugs and adapted by means of a bolt and a slot outward from the shaft bearing to be clamped on the shaft, and a swiveled leg-head on the shaft outside of each of the lugs on the disk, the swiveled head's adapted to be clamped fast together and upon the shaft.

4. In a support for a rock-drilling machine, the combination with guide rails for the drilling machine, of a frame secured to the guide rails comprising two plates divided centrally with overlapping ends to receive clamping bolts, clamping bolts in said ends, a circular, angularly undercut recess to receive a tripod disk centrally of the plates, and a disk fitted to the recess, the disk having CHRISTIAN F. PAUL, JR.

Witnesses:

CLINTON F. FERRIS, MARVIN R. SMITH. 

